Barry Sheene and Kenny Roberts bikes ridden

The Barry Sheene bike we have here is a square-four 1975 Suzuki RG500 XR14. Sheene won his first ever GP on it and the '76 and '77 world championships.
In the yellow corner is an inline-four-cylinder 1980 Yamaha YZR500 OW48R, ridden by three-time world champion 'King' Kenny Roberts, complete with two reverse cylinders (hence the 'R').
Both are excessively loud, smelly two-strokes, with wafer-thin powerbands and no interest whatsoever in suffering fools gladly.
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Exclusive: MCN ride the Britten V1000 | First Rides | Motorcyclenews.com
MCN exclusively ride the legendary Britten 1000, a triumph of
cottage-industry race engineering built in a shed by New Zealander John
Britten in the early '90s and raced at the Isle of Man TT.
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Festival of 1000 Bikes 2011 - Kenny Roberts at Mallory Park
Festival of 1000 Bikes: Can a good club racer on a Ducati 1198 keep up with
59-year-old legend Kenny Roberts on a 30-year-old Yamaha OW60 GP bike he
hasn't ridden for decades around Mallory Park?
MCNs Adam Child joined "King" Kenny on track to find out.